This article covers unpacking, mounting, making gas and electrical connections, and performing the initial startup for N2-GEN™ CPi & CPx Series generators. Always complete a leak check before placing the system in service. Refer to the general arrangement drawing included with your unit for model-specific connection locations and fitting sizes.
Receiving & Unpacking
Inspect all components for damage upon delivery. Document any visible damage with photos and report it to the shipping carrier immediately before contacting South-Tek Systems. South-Tek Systems is not responsible for damage that occurs during shipping and handling.
The 2CPi(x) ships in a cardboard container. The 4CPi(x) ships in a wooden crate — unbolt the cabinet base from the crate, carefully lift the unit out, and use a floor jack to move it to the final location. Once in place, remove the 4 colored shipping bolts at the bottom of the cabinet before startup.
Until installation, store the unit upright in a dry, climate-controlled environment (60–80°F). Do not stack objects on top of the generator. Keep all gas lines dry to prevent moisture from entering the system at hookup. For storage exceeding one month, place desiccant bags inside the electrical cabinet to protect electronics.
Mounting — 2CPi & 2CPx (Wall Mounted)
Mount the 2CP models on a weight-bearing wall capable of supporting the unit's full weight. Install indoors, upright, away from heat sources, steam, and water. The optional wall mounting bracket kit (STS Part #: A05-TYP1-XX) is designed for standard 16″ stud spacing. Without the bracket kit, use the cabinet's mounting holes to secure the unit level and plumb, directly to the wall.
- Maintain at least 4″ clearance on each side of the cabinet for ventilation — 36″ is recommended for access to the control panel, tube/pipe connections, and front cover.
- Do not install near heat sources or where steam or water may contact the unit.
- The ¼″ OD drain port below the cabinet must be plumbed to the nearest site drain.
Installation — 4CPi & 4CPx (Floor Standing)
Install the 4CP models on a hard, flat surface capable of supporting the unit's weight. Four anchor bolt holes on the support legs allow the unit to be secured to the floor. Anchoring is not required by South-Tek Systems, but all applicable site and local codes for securing floor-standing equipment must be followed.
- Maintain at least 6″ clearance on the left side of the cabinet for ventilation — 36″ is recommended for access to the control panel.
- Maintain 36″ minimum clearance at the front for routine maintenance access.
- Leave adequate clearance at the top of the cabinet for gas line connections.
- The two ¼″ OD drain ports on the left side of the cabinet (4CPi) or at the bottom of each filter bowl (4CPx) must each be individually plumbed to the nearest site drain.
Gas Connections
All cabinet port connections are ¼″ NPT Female. Double-check all connection locations against the general arrangement drawing before turning on the system or opening any valves. Use Teflon tape or equivalent thread sealant on all fittings. Use quality tubing and fittings rated for the operating temperature and pressure of the system.
For 2CP models, run lines to and from the external nitrogen storage tank per the general arrangement drawing. For 4CP models, the internal storage tank is plumbed to an external ball valve — no internal plumbing is required.
Install an on/off valve on each individual nitrogen supply line. This enables easier troubleshooting and maintenance and prevents accidental pressurization during service. Never disconnect a line that is under pressure without first closing the isolation valve.
Startup Procedure
For CPx models, start the external air compressor and allow the air receiver to fully pressurize per the compressor manufacturer's instructions before opening the air valve to the generator.
- Verify all gas connections are secure and all fittings have been checked for leaks.
- Turn on the power switch (located on the upper left side of the control panel). The controller display will illuminate.
- The system will automatically begin producing nitrogen and filling the storage tank. Initial pressurization to 65–75 PSIG may take up to 1 hour.
- Monitor the pressure gauge to confirm the tank is building pressure. The system will automatically enter Standby mode once the tank is full.
- Once in Standby, monitor the pressure for 1–2 minutes. Any pressure drop indicates a leak — check all fittings and connections before proceeding.
- Open the nitrogen outlet valve to the process or downstream equipment. The system will automatically cycle as demand draws down the storage tank.
Checking for Leaks
Use a spray bottle with soapy water on all fittings, connections, and tubing. Bubbles indicate escaping gas. Do not spray directly on electrical components. Push-to-connect fittings may show bubbles at low flow rates — an acceptable leakage rate for these fittings is up to 5 cc/min. Fix or replace any leaking fittings or hose before placing the system in service.
If a leak cannot be located visually, shut off the nitrogen outlet valve and isolate sections of the system to identify where pressure is dropping over time.
Contact South-Tek Systems
Phone: (910) 415-1880
Email / Ticket: support@southteksystems911.zendesk.com